I'm sure this has been asked before, but I can't find it. Has anyone tried to use a Cannondale hollowgram with the Rotor BB (the one that allows use of their BB30 crank on a BSA bike)? I thought I read somewhere the axel length is off, or something.

You will have to do some research on spindle lengths available with the Cannondale, but I strongly suspect the answer is "no".

Currently there is what is effectively a "long BB30" standard evolving, otherwise known as BB386EVO. It uses a 30mm spindle but with the bearing spacing of a 386BB. (Which is derived from a regular old fashioned BSA BB with outboard cups). Right now FSA, Rotor and Campagnolo make these cranksets, possibly others too. It's a flexible solution for a wide variety of BB shell types, including BSA.

A "regular" or standard BB30 system puts the bearings closer together and uses a shorter spindle, which is probably what you have, although you need to be more specific about what crankset you have.

_________________There's sometimes a buggy.How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...and if you fix your attitude you can ride along with me.

Yes it can be done. You need a longer spindle and modify it a little bit.If I remember correctly you need a 122 mm spindle.As a result your chainrings will be 9mm more outward and the q-factor will be 18mm wider.

Yes it can be done. You need a longer spindle and modify it a little bit.If I remember correctly you need a 122 mm spindle.As a result your chainrings will be 9mm more outward and the q-factor will be 18mm wider.

If you don't care about this it will be perfectly fine.

This illustrates another problem - primarily chainline and to a lesser extent the Q factor.

These problems would not be there in a "BB386EVO" type crank which would provide the correct chainline. I'm not sure you could get a FD that would work with a crank 9mm further away, plus the undesirable chain angles that would occur.

_________________There's sometimes a buggy.How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...and if you fix your attitude you can ride along with me.

Who is online

You cannot post new topics in this forumYou cannot reply to topics in this forumYou cannot edit your posts in this forumYou cannot delete your posts in this forumYou cannot post attachments in this forum